BeagleBone Black is not booting up

I was booting my BBB using eMMC. After that i powered down BBB and inserted a blank 2GB uSD card. It stopped to boot. I removed the 2GB uSD card but it is still not booting. I even rewrote the eMMC as described in but it still not booting up. eMMC however gets written as all the LED’s flash after the completion.
Please Help.

Do any of the LED’s flash or turn on when you try to power up the board?